From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E0421C47083 for ; Wed, 2 Jun 2021 14:57:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C0628613BF for ; Wed, 2 Jun 2021 14:57:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230262AbhFBO7K (ORCPT ); Wed, 2 Jun 2021 10:59:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:34534 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230029AbhFBO7J (ORCPT ); Wed, 2 Jun 2021 10:59:09 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 63A6F60C3F; Wed, 2 Jun 2021 14:57:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622645846; bh=9S5+0imidO+Ol9OzZqRG2yXOFZnJXLzoJ8dwHhJ87c0=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=nTptz/RlreMg0+WvWbELEa13RR9Mh6Crt8dAeUzRJtFkqemJWRI+ULnVKfkhaZstK vawFGwKVXBV0TVqZkzQZDnRrbYNfKZQ6UBZTxELF8o2ClxDpl7vFkeoieBg2BRWB6V mQ6ozIIHUrgorrb/sJdGW9dfL/SO9mIR+UCiwgO6W9o2y45oeB/uiw6CWwYBiwJtC5 Y0GbUj65jYHd/OgfuIqc8gs7BrFGTnDjxy80AdnLetKU7UGZ4GTin2ZgyubqFz3x9h oJXgwPx3LLdNBok4d7d8cab8mhdwhx5U/g7YKOr0ndvllgPTgBXNQZ/CEkkZri42kq hXmxbPGlR3tcw== Subject: Re: [PATCH 2/2] f2fs: Advertise encrypted casefolding in sysfs To: Daniel Rosenberg , Jaegeuk Kim , linux-f2fs-devel@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Gabriel Krisman Bertazi , kernel-team@android.com References: <20210602041539.123097-1-drosen@google.com> <20210602041539.123097-3-drosen@google.com> From: Chao Yu Message-ID: Date: Wed, 2 Jun 2021 22:57:20 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.2 MIME-Version: 1.0 In-Reply-To: <20210602041539.123097-3-drosen@google.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 2021/6/2 12:15, Daniel Rosenberg wrote: > Older kernels don't support encryption with casefolding. This adds > the sysfs entry encrypted_casefold to show support for those combined > features. Support for this feature was originally added by > commit 7ad08a58bf67 ("f2fs: Handle casefolding with Encryption") Shouldn't this be backported to the kernel where we support casefolding with encryption? So adding a fixes tag here? Thanks, > > Signed-off-by: Daniel Rosenberg > --- > fs/f2fs/sysfs.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/fs/f2fs/sysfs.c b/fs/f2fs/sysfs.c > index 09e3f258eb52..3c1095a76710 100644 > --- a/fs/f2fs/sysfs.c > +++ b/fs/f2fs/sysfs.c > @@ -161,6 +161,9 @@ static ssize_t features_show(struct f2fs_attr *a, > if (f2fs_sb_has_compression(sbi)) > len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", > len ? ", " : "", "compression"); > + if (f2fs_sb_has_casefold(sbi) && f2fs_sb_has_encrypt(sbi)) > + len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", > + len ? ", " : "", "encrypted_casefold"); > len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", > len ? ", " : "", "pin_file"); > len += scnprintf(buf + len, PAGE_SIZE - len, "\n"); > @@ -579,6 +582,7 @@ enum feat_id { > FEAT_CASEFOLD, > FEAT_COMPRESSION, > FEAT_TEST_DUMMY_ENCRYPTION_V2, > + FEAT_ENCRYPTED_CASEFOLD, > }; > > static ssize_t f2fs_feature_show(struct f2fs_attr *a, > @@ -600,6 +604,7 @@ static ssize_t f2fs_feature_show(struct f2fs_attr *a, > case FEAT_CASEFOLD: > case FEAT_COMPRESSION: > case FEAT_TEST_DUMMY_ENCRYPTION_V2: > + case FEAT_ENCRYPTED_CASEFOLD: > return sprintf(buf, "supported\n"); > } > return 0; > @@ -704,6 +709,9 @@ F2FS_GENERAL_RO_ATTR(avg_vblocks); > #ifdef CONFIG_FS_ENCRYPTION > F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO); > F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2, FEAT_TEST_DUMMY_ENCRYPTION_V2); > +#ifdef CONFIG_UNICODE > +F2FS_FEATURE_RO_ATTR(encrypted_casefold, FEAT_ENCRYPTED_CASEFOLD); > +#endif > #endif > #ifdef CONFIG_BLK_DEV_ZONED > F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED); > @@ -815,6 +823,9 @@ static struct attribute *f2fs_feat_attrs[] = { > #ifdef CONFIG_FS_ENCRYPTION > ATTR_LIST(encryption), > ATTR_LIST(test_dummy_encryption_v2), > +#ifdef CONFIG_UNICODE > + ATTR_LIST(encrypted_casefold), > +#endif > #endif > #ifdef CONFIG_BLK_DEV_ZONED > ATTR_LIST(block_zoned), >